First I would like to address the elephant in the comments below. Most people who write plain old Vanilla JavaScript have nothing to worry about when it comes to a type system in the browser. You can remain calm about these changes in the browser. Type systems are useful when you are in development mode. You will not see types if you don't use them and if you do you have a much better developer experience. Here is my rule when I am developing an application. If I am working with a team then use types and if I am working by myself it's up to me. For those of you who don't like TypeScript then you should stick to what you know. However, the future use of type systems will become part of your day to day job if you work with large team. Get use to it...
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First I would like to address the elephant in the comments below. Most people who write plain old Vanilla JavaScript have nothing to worry about when it comes to a type system in the browser. You can remain calm about these changes in the browser. Type systems are useful when you are in development mode. You will not see types if you don't use them and if you do you have a much better developer experience. Here is my rule when I am developing an application. If I am working with a team then use types and if I am working by myself it's up to me. For those of you who don't like TypeScript then you should stick to what you know. However, the future use of type systems will become part of your day to day job if you work with large team. Get use to it...